package com.carnation.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

public class PageEncodingFilter implements Filter{
	private String encoding = "UTF-8";
	protected FilterConfig filterConfig;

	@Override
	public void destroy() {
		this.encoding = null;
	}

	@Override
	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2) throws IOException, ServletException {
		HttpServletRequest request = (HttpServletRequest)arg0;
		request.setCharacterEncoding(encoding);
		arg2.doFilter(arg0, arg1);
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		// TODO Auto-generated method stub
		this.filterConfig = arg0;
		if(filterConfig.getInitParameter("encodng") !=null){
			encoding = filterConfig.getInitParameter("encoding");
		}
	}
}
